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Topic Review (Newest First)

06-11-2015 07:08 PM

ecotanker

Great thread! Thanks for all the great tips and info. I read the first 30 or so pages then skipped to the end. I mod my fluidized bed filter a reactor similar to this. The in flowing water goes down a tube and then up through a sand bed. The return water needs to pass through another tube to get back to the tank. Hopefully this work just as well.

06-11-2015 01:40 AM

philipraposo1982

is 10" housing big enough for a 75g?

04-20-2015 05:55 AM

ikuzo

why not add another valve to close the reactor if you want to bypass it completely

04-20-2015 02:32 AM

Immortal1

Yes, with the bypass fully open, water still runs thru the reactor. How much exactly, I don't now. Will have to spend some time figuring out what regulator pressure, what BPS, what bypass valve setting works. Should be fun.

if i use an inline atomizer before the cerges reactor, how's the result?

is it still dissolving co2 or those tiny bubbles will just blow away with the flow through the middle tube?

02-21-2015 06:36 AM

Solcielo lawrencia

Quote:

Originally Posted by andyl9063

Well there's one hour left in Co2 period and water level has not drop in reactor. How come no one mention a big pump is needed along with bigger tubing? I think it's going to work great now. I'll see what happens a few days from now. Thanks guys

Because the understanding that pressure is required for dissolution only became known to the hobby last year. (It's not exactly dwell time that's important.) If you understand this concept of pressure, you can do things to increase it. Numerous ways to do it - I've suggested some.

A problem I suspect is the 20" housing (short return head height) + 1/2" tubing = very low pressure in the reactor. The pump output may be enough but the lack of pressure is the problem. Thus, a 10" tall housing may actually be better, though I am not certain.

02-21-2015 03:55 AM

ltb420

The original venturi reactor design that called for the 200 GPH pump was slightly less than 2" wide using a water changer tube.

02-21-2015 01:06 AM

andyl9063

Well there's one hour left in Co2 period and water level has not drop in reactor. How come no one mention a big pump is needed along with bigger tubing? I think it's going to work great now. I'll see what happens a few days from now. Thanks guys

02-20-2015 02:20 PM

andyl9063

Quote:

Originally Posted by ltb420

It's only 4"wide, too much flow and all the bubbles just run right through the reactor. It sounds like your headed in the right direction, now just playing with the ball valve to get just the right back pressure.

oh, i didn't realize it was 4" wide. But you are right about all the bubbles going right out of reactor. It was microbubbles which has been dissolved by reactor. The flow was really a lot, I'll play around with it today and see.

02-20-2015 02:11 PM

ltb420

Cerges' Reactor - DIY Inline CO2 Reactor

It's only 4"wide, too much flow and all the bubbles just run right through the reactor. It sounds like your headed in the right direction, now just playing with the ball valve to get just the right back pressure.

02-20-2015 12:46 PM

andyl9063

Quote:

Originally Posted by ltb420

The 2000 GPH may be too much flow for your 4" reactor. The 1000 GPH may be a better option.

i have a 20" btw.

So I upgraded tubing and fittings to 3/4 on input side of reactor. Hook it to quietone 4000 via 10 ft tubing with 991 gph. I left the eheim tubing on output side of reactor. The flow is tremendous and I had to dial it down using ball valve. I'm going to test co2 today since it got late last night.

I think the pressure is going to be really good.

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